If It Has Two Strokes, We Cover It

From screaming dirt bikes to screaming Jimmys. Expert guides, engine tips, oil comparisons, and maintenance advice for every two-stroke engine ever built.

Premix • Injection • Detroit Diesel • Powersports • Small Engine • Marine
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Guides & Tips
Learn to keep your 2-stroke running right
In-depth articles, how-tos, and expert breakdowns. Whether you're mixing premix in a gas can or adjusting injector timing on a 6-71, we've got you.
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Fuel & Oil Mixing

Ratio guides, oil types, premix vs injection, and why getting the mix right matters more than you think.

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Engine Maintenance

Top-end rebuilds, piston inspection, ring replacement, port timing, and preventative maintenance schedules.

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Oil Comparisons

Synthetic vs conventional, brand breakdowns, and which oils actually protect your engine under load.

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Carburetor & Fuel Systems

Jetting guides, needle adjustments, reed valves, and dialing in your carb for altitude, temperature, and power.

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Seasonal Prep

Winterizing your sled, storing your dirt bike, fogging your outboard, and getting ready for the season done right.

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Troubleshooting

Won't start? Bogging? Fouled plugs? Smoke signals? Diagnose and fix common two-stroke problems fast.

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Detroit Diesel
The Screaming Jimmy
The original two-stroke diesel. From the legendary 6-71 to the earth-shaking 16V-149, Detroit Diesel built some of the most iconic engines in history. We cover them all.
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Series 71

The one that started it all. Inline and V configurations. 3-71, 4-71, 6-71, 6V-71, 8V-71, 12V-71, 16V-71.

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Series 92

The turbocharged evolution. 6V-92, 8V-92. The sound of highway trucking in the 70s, 80s, and 90s.

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Series 149

The big boys. 8V-149, 12V-149, 16V-149. Marine, mining, power generation, and industrial monsters.

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Series 53

The compact workhorse. 2-53, 3-53, 4-53, 6V-53. Trucks, buses, generators, and marine applications.

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DD Marine Applications

Detroit Diesels in boats, tugs, barges, and fishing vessels. Raw water cooling, marine gears, and exhaust systems.

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DD Maintenance & Rebuild

Injector timing, blower maintenance, liner replacement, head torque specs, and keeping your Jimmy screaming.

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By Application
Find guides for your machine
Vehicle and equipment-specific tips, ratios, and recommended oils for every two-stroke application.
🏍️ Dirt Bikes πŸ›· Snowmobiles β›΅ Outboards πŸͺš Chainsaws 🏎️ Racing 🌿 Lawn & Garden πŸ›΅ Scooters & Mopeds 🚒 PWC / Jet Ski πŸš› Detroit Diesel 🚒 Marine Diesel ⚑ Generators πŸš— ATVs / UTVs 🏍️ Vintage Motorcycles 🏭 Industrial
Recommended
Two-stroke oils that actually perform
We test, compare, and recommend the best synthetic oils for every two-stroke application on the planet.
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Best Dirt Bike Oils

Top picks for MX, trail, and enduro riding. Synthetic options that protect hard-working engines.

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Best Snowmobile Oils

Cold-weather formulations that prevent plug fouling and keep your sled running clean all season.

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Best Outboard Oils

Marine-rated two-stroke oils with low smoke, low toxicity, and corrosion protection.

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Best Diesel Oils for DD

Heavy-duty diesel oils that keep your Detroit Diesel 2-strokes protected under extreme load and heat.

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Best Small Engine Oils

Chainsaw, trimmer, and leaf blower oils. The right premix oil for tools you depend on every day.

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Best Racing Oils

High-RPM, high-temp protection for karts, GP bikes, and competition engines. No compromises.

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Need to mix premix fuel right now?

Our free calculator gives you the exact oil-to-gas ratio for any two-stroke premix engine. Fast, accurate, no signup.

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